<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>第一次</title>
    <style>
        div{
            width: 1000px;
            height: 10000px;
            background-color: green;

        }
    </style>
</head>
<body>
    <div>

    </div>
</body>
</html>